Re-entered 1989-12-17Rocket body

DELTA 1 R/B(2)

NORAD: 9933
COSPAR: 1977-029C

OrbitalWiki publishes live orbits for active satellites only. This object is in the full catalogue: who launched it, what it is and its last published orbit are below, but there are no current orbital elements for it here.

Is it working?

Sources agree

Source	What it says	Date
CelesTrak SATCAT	Decayed or deorbited	1989-12-17
GCAT (J. McDowell)	Re-entered	1989-12-17

Each line is one source and what it says. Where they disagree, both are shown; OrbitalWiki does not pick a winner.

Spacecraft

Built by: Thiokol-Elkton
Owner: NASA Goddard Space Flight Center
Platform (bus): Star 37
Mass at launch: 1,123 kg(estimate, good to about 20%)
Dry mass: 83 kg
Total mass with attached parts: 83 kg(estimate, good to about 20%)
Length: 1.7 m
Diameter: 0.9 m
Span with arrays and booms: 1.7 m
Shape: Sphere + Cone

From GCAT by Jonathan McDowell (CC BY 4.0), record S09933, checked 2026-11-05. About this source

Launch

Launch date: 1977-04-20
Rocket: Delta 2914
Flight: Geos 1
Mission name: Geos 1
Launch site: CC, LC17B
Launched by: NASA Goddard Space Flight Center
Rocket performance: Failure
Launch designator: 1977-029

From the GCAT launch log, launch 1977-029, checked 2026-11-05. About this source

Catalogue record

Object type: Rocket body
Owner code: US
Launch date: 1977-04-20
Re-entered: 1989-12-17
Period: 88.0 min
Inclination: 25.89°
Apogee: 207 km
Perigee: 139 km
Radar cross-section: 4.0328 m²

From CelesTrak SATCAT, checked 2026-11-05. About this source

Where it came from

Parent object: DELTA 1 R/B(1) (NORAD 9932)
Catalogued pieces that came from it: 1

The object this one was attached to at launch, or broke off from, as GCAT records it.

Everything from this launch

Debris1 in total, 0 still in orbit
Payload1 in total, 1 still in orbit
Rocket body2 in total, 0 still in orbit